Valve.



A. R.- MULLER.

VALVE.

APPLICATION FILED MAR. 15. I919.

Patented July 22, 1919.

ANTON BUDOLF MiiLLER, OF EVERETT, MASSACHUSETTS.

VALVE.

Specification of Letters Patent.

Application filed March 15, 1919. Serial No. 282,864.

To all whom it may concern:

Be it known that I, ANTON RUDoLr Moi.- nnR, a subject of the King of Sweden, residing at Everett, county of Middlesex, State of Massachusetts, have invented a certain new and useful Improvement in Valves, of which the following is a specification, reference being had therein to the accompanyingdrawings.-

The invention relates to new and useful improvements in throttle valves of the particular type known as modulation valves. It is especially intended for use with radiators employed in hot water and steam heat-' ing systi .ns although not limited to such use. It isperhaps more particularly advantageous in connection with hot water sys terns. In both of the above mentioned heating systems, but more especially in hot water systems, it is frequently the case for one rea-' son or another that there is more free circulation in some parts of the system than in others, thus causing an uneven distribution of the heat which should be met by proper adjustment of the radiator valves.

One object of the present invention is to provide an adjustable throttle arranged in the valve body so that the size of the passage for the hot water or steam even when the main valve is fully opened or lifted from its seat may bevaried according to the adjustment of the throttle so as to obtain an even circulation and distribution of heat throughout the system. The valves in the several radiators should be adjusted according to the requirement shown by experimentation when the system is installed so that there will be equal circulation in all of the radiators when all of the main valves are fully open. If an adjustable throttle device is not employed it is impossible to maintain an even distribution or circulation except by variation in the sizes of the valves employed in the several radiators according to the differences in circulation, and even by the use of variable sized valves it is practically impossible with the ordinary valve to secure an equal distribution of pressure in the diflerent radiators because the valves are not graduated in sizes sufficiently close to meet the difi'erences in pressure in the different radiators. My invention enables each valve to be adjusted to all the variations in pressure within vcertain limits.

Another object of the invention is to provlde an adjustable throttle which can be actuated by the stem of the valve.

The invention will be fully understood by reference to the following description when taken in connection with the accompanying drawings and the novel features thereof will be pointed out and clearly defined in the claims at the close of this specification.

In the drawings, Figure l is a vertical section of a. valve embodying my invention showing the main valve and throttling mechanism closed.

Fig. 2 is a horizontal section on line 22 of Fig. 1.

Fig. 3 is a vertical section taken on the same line as Fig. 1 but showing the valve wide open, the throttling mechanism being Patented July 22, rare.

adjusted to such position that when the main valve is wide open the throttle valve will also be wide open.

Fig. 4: is a section'on line 44 of Fig. 3.

d Fig. 5 is a detail view of the throttle cylin- Fig. 6 is a detail view of the valve stem having the bit or wing projection thereon for actuating the throttle cylinder.

Fig. 7 is a side elevation showing the adjustable bonnet and stop and the scale.

Fig. 8 is a sectional view of the bell and stop pin connected therewith.

Referring now to the drawings, 1 represents the valve body which is formed at one end with a nipple portion 2 tapped out for connection with an inlet pipe. It is also provided with a nipple portion 3 connected with one side of the valve body adapted for connection with a radiator.

A bonnet 4 is screwed into the upper end of the Valve body 1 and is formed with a central bore for the passage of the valve stem 5, the lower portion of said bore being tapped out to engage the threaded portion of the stem 5.

The lower end of the stem 5 is connected with a valve disk 6 formed with a conical lower portion 7 which is adapted to be seated upon the cone shaped annular seat 8 within the valve body. The stem is provided with any suitable means for turning it to open and close the valve. In the drawings, the stem is shown as provided with a wheel 9 for the purpose of operating it.

' way. In order to of the body may when t hollow cylinder 10 which is rotatable on its axis and which I term a throttle cylinder. Preferably 11 formed shoulder 12 at the bottom of the larger diameter of the valve body. The said cylinder is rotatable within said groove 11 as a guide keep the cylinder from jumping out of its grooved way, it is preferably formed with an annular Ii 13 at its upper end and a screw rin .14 w ich enages with the internal threa ed portion 15 be screwed down into engagement with the said annular lip 13 to hold the cylinder just tightly enough so that it will not jump. or rattle and yet leave it free'to be rotated.

The cylinder 10 is formed with a circular opening 16 in one side, preferablyof the same diameter as the opening 19 from the valve body to the nipple 3. When the cylinder-10 is positioned on its axis so that the o 'ening 16 therein registers exactly with t v e opening 19 to the nipple 3 then therewill be the largest possible area of opening for the hot water or steam through the valve into the radiator. The said cylinder, however, may be turned on its axis so as to bring any fractional part desired of the opening 1'6 into alinementwith the outlet opening 19 from the valve body. Means are provided whereb the said cylinder will be rotated e main valve is rotated and means are also valve dis is being opened the c will'be caused to rotate so as to linder 10 ring into registration with the radiator inlet passage to have a plurality 19 either the full opening 16 or any predeterinined fractional part of said opening 16 according to the adjustment and then be stopped from further opening movement. The means for accomplishing this are as follows :,The cylinder 10 is formed with one or more vertical guide ways 17 in its inner eriphery. One of such guide ways is all that is really necessary but it is preferable of such guide we s in greater fineness of a 'uste ways are formed y a 18 extending radially inorder to secure a ment. These :gui plurality 1 of fins ward from the inner periphery of the cylinder. In'the drawings three of such guide ways are shown. The stem 5 is provided with a laterally extending projection 34 something after the manner of a bit on a door key which enga es with one of the said guide ways 17. he engagement of the said projection 34 with the guide way is efiected by a vertical slidingmovement when the parts'are being assembled and at such time the projection 34 may be made to engage with either one of the guide ways that'may be thought best and is then retained in such engagement until the stem is removed by unscrewing the it is seated in an annular groove within the annular flange or let opening 19 just .theopening 16 which is required according rovided whereby when the main movement of the valve, said limiting or stop means being adjustable so that the stop will become efi'ective just at the right time when the cylinder has been rotated a suficient dis tance to bring into registration with the outthat fractional part of to previous experimentation for proper distribution ofthe water or steam. The preferred means for accomplishing the above result is shown in the drawings and is as follows: An annular bell 20 goes loosely over the threaded shank 21 of the threaded bonnet 4 and has an annular flange 22 which is seated upon a shoulder 23 'at the lower end of the shank portion 21 of the bonnet 4. The bell 20 also has a downwardly extending lip 24 which fits loosely outside of an annular flange 25 projecting from the upper end of the body, portion of the bonnet 4. Said bell' is rotatab e on its axis with relation to said-bonnet before the bell is clamped to its seat. After the parts are assembled and/L08- adjusted, the bell is clamped against movement as will be hereinafter" described. A stop pin 26 projects outwardly from the said downwardly extending lip 24 of the bell. An arm 27 secured to the wheel 9 or to the stem 5 extends downward in such position that during the rotation of the stem of the valve the saidarm 27 is adapted to engage with said stop pin 26. In the drawings, said arm 27 is shown as being part of an L- 'shaped member having the horizontal head 28 which is apertured to go over the tapered upper end of the stem 5 and may be pushed down so as to form a tight fit so that it will rotate with the stem. It is immaterial just how the connection is made, the important feature being that it should be secured in some manner so that the arm 27 will be-actuated by the rotation of the stem of the valve.

When the parts are assembled and adjusted, the bell .20 should be held firml against rotation. The bell should be a justed to such position that when the main thereby also rotating the cylinder 10, the

arm 27- will come'into engagement with the Y stop 26 to stop its further rotation when the cylinder 10 has been rotated far enough to bring as much of the opening 16 in the cylinder into registration with the outlet opening 19 tothe radiator as has been predetermined to be the proper de ee of opening for the particular valve. his degree of opening will be determined by experimentation by the steam fitter when he installs the 23. A stufling box nut 30 is then screwed adjusted so that the full area down onto the shank 21.

When the parts are assembled in the manner already described, the bell 20 being adjusted so as to bring the stop 26 into the proper position as will have been determined by previous experimentation, the said arm 27 will, when the valve is opened to full extent permitted by the adjustment, be in contact with the stop pin 26. To close thevalve the stem 5 will be rotated by means of the handle 9, in a clockwise direction as usual with valves until the main valve 6 becomes fully seated on its seat 8. When the valve is to be opened it will be rotated counter-clockwise in the usual manner until the arm 27 again strikes the stop pin 26.

It is obvious that the full range of opening movement, even when the cylinder 10 is of the opening 16 is in alinement with the inlet opening 19 to the radiator shouldbe less than a complete rotation, otherwise during the lifting of the valve 6 the opening 16 of the cylinder wonldcorne registration with the opening 19 and rotate past the opening 19 and again come around into alinement with the opening 19 and so on for as many times as the stem raise the valve 6. For this reason therefore the thread 31 of the valve stem and the cooperating internal thread of the bonnet 4 should be quick acting so as to rapidly lift the valve stem and the valve 6. Preferably the valve stem and bonnet are double threaded to secure this quick action.

Preferably the valve body will be provided with a scale 33 marked on its outer periphery just below the annular flange 24 of the bell which will indicate by the position of the stop pin 26 on the hell with relation to the graduated marks of the scale to what extent the opening 16 in the cylinder comes into registration wlth the opening 19 of the inlet to the radiator when the valve 6 is fully raised from its seat.

What I claim is:

1'. In combination with a valve body having an inlet opening for connection with an inlet pipe and provided with another opening adapted for connection with a radi ator or other object to which water or steam is to be admitted throughthe chamber in the body of the valve, a valve which controls the passage from the inlet pipe to the valve body, a hollow rotatable cylinder within said valve body having an opening in the periphery thereof which during the rotatlon of the cylinder is adapted to be brought into position of varying degrees of alinement with the opening to the radiator according to the extent of rotation of the said cylinder, and stop mechanism which limits the degree of opening movement of the cylinder, said cylinder being formed with a gulde way on its inner periphery and said valve having a stem provided with a rojection which engages with the said gni e way in the cylinder whereby during the rotation cylinder having an opening in its periphery,

andvmeans whereby the rotation of the valve also rotates the said cylinder to bring the said opening in the cylinder into registration with the outlet opening from the Vahe body 3. In combination with a valve body having a screw down valve, said valve body having an inlet and an outlet opening, a hollow throttling cylinder located within the chamber of said valve body and rotatable on its axis, said cylinder having an opening in its periphery which during the rotation of the cylinder is adapted to be brought into more or less registration with the outlet opening from the valve body according to the degree to which the said cylinder is rotated, said cylinder having a grooved way on its inner periphery in the lengthwise direction of the cylinder, and a valve stem connected with said valve and having a projection thereon which engages with said groove whereby the rotation of the valve stem rotates the cylinder.

4. In combination with a valve body having a screw down valve, said valve body ohaving an inlet and an outlet opening, a hollow throttling cylinder located within the chamber of said valve body and rotatable on its axis, said cylinder having an opening in its periphery which during the rotation of the cylinder is adapted to be brought into more or less registration with the outlet opening from the valve body according to the degree to which the said cylinder is rotated, a shoulder within the valve body on which one end of said cylinder is seated in such manner as to be rotatable thereon, and a screw ring screwed into the valve body and adapted to be screwed down into loose engagement with the other end" of said cylinder in such manner as to retain the cylinder against axial movement but sufliciently loose to permit rotary movement of the cylinder.

5. In combination with a valve body having a screw down valve provided with a valve stem, said valve body having an inlet and an outlet opening, cylinder located within valve body and havin an opening in its periphery, means where y the rotation of the valve stem rotates said cylinder, a bonnet screwed into one end of the valve body and having an aperture through which the valve stem passes, said bonnet being formedwith a shank and with an annular shoulder between the shank and the body of the bonnet, and a bell which goes loosely over said shank and is seated upon said shoulder, being rotatably adjustable thereon, means for clamping said bell in its adjusted position, a, stop rojection on said bell, and an arm connected with the valve stem which during the rotation of the valve stem is adapted to engage said stop to limit the opening movement of the valve stem and thereby determine the degree of registration of the opening in the cylinder with the outlet opening from the valve body.

6. In combination with a valve body havthe chamber of said a hollow throttling llfi a screw down valve provided with a v. ve stem, said valve and an outlet opening, cylinder located within valve body and having an opening in its periphery, means whereby the rotation of the valve stem rotates said cylinder, a bonnet screwed into one end of the valve body and having an aperture through which the valve stem passes, said bonnet being formed with a shank and with an a hollow throttlin body having an inlet the chamber of sai annular shoulder between the shank and the body of the bonnet, and a bell which go s loosely over said shank and is seated upon said shoulder, being rotatably adjustable thereon, means for clamping said bell in its adjusted position, a stop projection on said bell, an arm connected with the valve stem which during the rotation of the valve stem is adapted to enlimit the opening move- 'ment of the valve stem and thereby determine the degree of registration of the opening in the cylinder with the outlet opening.

gage said stop to from the valve body, and a graduated scale on the outside of the valve body whereby the degree of possible opening throu h'the said cylinder for any llpredetermin position of the said sto w' be indicated by the poslition of the said stop with relation to the sea e.

In testimony whereof I afiix my signature.

ANTON RUDOLF MOLLE 

